ADAS camera calibration
In brief: Cars with a windshield-mounted camera need it recalibrated after a new windshield. The Auto Glass Safety Council says a one-degree error puts the system 8 feet off at 100 feet, and IIHS found two-thirds of owners whose repairs involved a windshield had post-repair problems[1][2].
What is ADAS calibration?
Advanced driver assistance systems (ADAS) such as automatic emergency braking and lane departure warning often rely on a camera mounted behind the windshield. The Auto Glass Safety Council (AGSC) says that after a windshield replacement, the components that interact with ADAS “must be recalibrated” so the vehicle can calculate stopping distance for emergency braking and alignment for lane departure warning[1]. Calibration means aiming the camera precisely again, using either targets set at measured distances in a shop (static) or a drive on marked roads with a scan tool (dynamic), as the vehicle maker specifies.
Why is it needed after a new windshield?
The AGSC puts it plainly: a windshield is “a second lens that the camera must look through”, and “no two pieces of glass are the same” in bend and clarity[1]. Vehicle makers state that the camera must be recalibrated if it is removed from its bracket. The council gives an example: if the camera aim is off by one degree, the collision avoidance system will be off by 8 feet at 100 feet away; at 30 mph a car needs 89 feet to stop on dry pavement, so an uncalibrated system might not stop the car until 8 feet after impact[1].
What claims should drivers question?
| Claim | AGSC response |
|---|---|
| “I never unplug the camera, so no calibration is needed.” | Vehicle makers require recalibration when the camera is removed from its bracket. |
| “No warning lights, so it works.” | The absence of trouble codes does not prove the camera sees correctly through new glass. |
| “The camera looks fine, so it’s aimed correctly.” | A camera “sees” differently through new glass until it is calibrated. |
Paraphrased from the AGSC’s fact sheet[1].
What do owners report after repairs?
The Insurance Institute for Highway Safety surveyed owners whose crash avoidance features had been repaired. About two-thirds of owners whose repairs involved a windshield replacement reported problems with the technology afterward, compared with fewer than half of those whose repairs had other causes[2]. IIHS notes automakers stipulate calibration whenever a sensor is removed and replaced or reinstalled, that some calibrations need large spaces, special training and expensive equipment, and that software updates and a lack of standard procedures make the job harder. It also found that automatic emergency braking cuts police-reported rear-end crashes by 50 percent, which is why getting calibration right matters[2].
What should I ask the shop?
- Does my vehicle have a windshield-mounted camera, and does the maker require calibration after replacement?
- Will calibration be static, dynamic or both, and who performs it?
- Will I receive a printed calibration report?
- If calibration is done elsewhere, how long until I can get there, and should I avoid relying on driver-assist features until then?
- Is calibration covered by my insurance claim?
Low Price Auto Glass’s website does not say whether it performs calibration in-house[3][4]. Ask before booking a replacement on a vehicle with a camera.
How do I know if my car has a windshield camera?
Look behind the rear-view mirror from outside: a black-framed housing with a small lens, often with a grey dotted frit band around it, usually indicates a camera. Features named lane keeping assist, lane departure warning, forward collision warning, automatic emergency braking, adaptive cruise or traffic sign recognition often use it. The owner’s manual lists the sensors.
Questions and answers
Do I need ADAS calibration after windshield replacement?
If your car has a windshield-mounted camera, vehicle makers and the AGSC say it must be recalibrated after replacement.
What happens if the camera is one degree off?
The AGSC says the system will be off by about 8 feet at 100 feet.
Does Low Price Auto Glass calibrate cameras?
Its website does not say; ask the shop.
Related articles
- Safe drive-away time
- Services and warranty
- Winter windshield damage
- Glossary
- Location, hours and directions
Notes
- ^ a b c d e Understanding the Importance of Calibration: What are the Facts?. Auto Glass Safety Council. Checked 9 November 2026.
- ^ a b c Crash avoidance features improve safety but complicate repairs. Insurance Institute for Highway Safety. Checked 9 November 2026.
- ^ Windshield Replacement in Hammond, Indiana. Low Price Auto Glass (autoglasshammond.com). Checked 9 November 2026.
- ^ Auto Glass Repair & Windshield Replacement in Hammond, IN (home page). Low Price Auto Glass (autoglasshammond.com). Checked 9 November 2026.